Product line issue when creating Subscription trough REST API

Summary

Product line is being changed to 0 when activating billing schedule trough REST API

Content

Hello,

I'm creating a subscription trough REST API with the attached payload.

I'm having an issue that when I use the field "GenerateBillingSchedule" it keeps the line amount as 0.

If I create without the field "GenerateBillingSchedule" it uses the value of "TotalContractValue" but then when I need to generate the billing schedule trough interface it also comes back amount 0.

Could you advise on what could be wrong at payload?

Regards,

Thiago